Pneumatic vacuum isometric body exerciser

Details Pneumatic vacuum isometric body exerciser Pneumatic vacuum isometric body exerciser

1994-12-21

1996-06-25

Reichard, Lynne A.

Exercise devices

User manipulated force resisting apparatus, component...

Utilizing fluid resistance

482111, 482128, A63B 21008

Patent

active

055295592

ABSTRACT:
The present invention provides a pneumatic vacuum isometric body exerciser for use by an individual for training muscle groups. The exerciser has a piston slidingly disposed in a cylinder such that the relative axial movement of the piston in the cylinder causes a pressure condition in the cylinder. A piston rod, connected to the piston, is located within the cylinder. Rotatable bearing surfaces are located between an outer wall of the piston rod, or piston, and an inner wall of the cylinder. A means for applying a force against the bearing surfaces allows for the resistance of the exerciser to be varied.
The present invention also provides a portable pneumatic vacuum isometric body exerciser with an air passage way located at a distal end of a cylinder. A pressure relief valve regulates the flow of air through the air passage way. The valve has a slidable valve element located relative to the air passage way.

REFERENCES:
patent: 3174343 (1965-03-01), Kasulis
patent: 3471145 (1969-10-01), Berger
patent: 4290600 (1981-09-01), Kolbel
patent: 4333645 (1982-06-01), Wu
patent: 4376533 (1983-03-01), Kolbel
patent: 4772016 (1988-09-01), Manion
patent: 4951941 (1990-08-01), Resk
patent: 5044630 (1991-09-01), Ventimiglia
patent: 5152732 (1992-10-01), Sayre
patent: 5261867 (1993-11-01), Chen

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